đèn giao thông Arduino

int led_Rouge = 6;  
int led_Orange = 5;  
int led_Verte = 4;  

void setup() {
    pinMode(led_Rouge, OUTPUT); 
  	pinMode(led_Orange, OUTPUT); 
  	pinMode(led_Verte, OUTPUT);
}

void loop() {
digitalWrite(led_Verte,LOW);
digitalWrite(led_Rouge,HIGH); 
delay(2000); 
digitalWrite(led_Rouge,LOW); 
digitalWrite(led_Orange,HIGH); 
delay(700); 
digitalWrite(led_Orange,LOW); 
digitalWrite(led_Verte,HIGH);
delay(2000); 

}